Lambda Canis Majoris

{{Starbox begin

| name = Lambda Canis Majoris

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Canis Major

| ra = {{RA|06|28|10.20747}}

| dec = {{DEC|−32|34|48.2455}}

| appmag_v = +4.48

}}

{{Starbox character

| class = B4 V

| b-v = −0.17

| u-b = −0.61

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|+41.0|4.1}}

| prop_mo_ra = −14.41

| prop_mo_dec = +25.21

| parallax = 7.70

| p_error = 0.16

| parallax_footnote =

| absmag_v = −0.85

}}

{{Starbox detail

| source =

| mass = {{Val|5.7|0.3}}

| radius =

| luminosity = 560

| temperature = 16,300

| gravity = 3.93

| metal_fe =

| rotational_velocity = {{Val|102|9}}

| age_myr = {{Val|39.8|19.1}}

}}

{{Starbox catalog

| names = {{odlist | B=λ CMa | CD=−32°3066 | HD=45813 | HIP=30788 | HR=2361 | SAO=196857 | GC=8410 }}

}}

{{Starbox reference

| Simbad = lam+CMa

}}

Lambda Canis Majoris (λ Canis Majoris) is a solitary, blue-white hued star in the constellation Canis Major. Lambda CMa is visible to the naked eye with an apparent visual magnitude of +4.48. Based upon an annual parallax shift of 7.70 mas as seen from Earth, this star is located about 424 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction of 0.14 due to interstellar dust.

This is a B-type main-sequence star with a stellar classification of B4 V. The star is roughly 40 million years old, and is spinning with a projected rotational velocity of 102 km/s. It has about 5.7 times the mass of the Sun and is radiating 560 times the Sun's luminosity at an effective temperature of 16,300 K.

References

{{reflist|refs=

{{citation

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| last1=van Leeuwen | first1=F.

| journal=Astronomy and Astrophysics

| volume=474 | issue=2 | pages=653–664 | date=2007

| arxiv=0708.1752 | bibcode=2007A&A...474..653V

| doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=. }}

{{citation

| title=Effective temperature and gravity c0 and beta indices for B-type stars

| last1=Castelli | first1=F.

| journal=Astronomy and Astrophysics

| volume=251 | page=106 | date=November 1991

| bibcode=1991A&A...251..106C | postscript=. }}

{{citation

| display-authors=1 | last1=McDonald | first1=I.

| last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L.

| title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars

| journal=Monthly Notices of the Royal Astronomical Society

| volume=427 | issue=1 | pages=343–57 | date=2012

| bibcode=2012MNRAS.427..343M | doi=10.1111/j.1365-2966.2012.21873.x

| doi-access=free | arxiv=1208.2037 | s2cid=118665352 | postscript=. }}

{{citation

| last1=Gontcharov | first1=G. A.

| title=Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system

| journal=Astronomy Letters | postscript=.

| volume=32| issue=11| pages=759–771| date=November 2006

| doi = 10.1134/S1063773706110065| bibcode=2006AstL...32..759G |arxiv = 1606.08053 | s2cid=119231169

}}

{{citation

| title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun

| journal=Monthly Notices of the Royal Astronomical Society

| volume=410 | issue=1 | pages=190–200 | date=January 2011

| doi=10.1111/j.1365-2966.2010.17434.x | doi-access=free | bibcode=2011MNRAS.410..190T

| arxiv=1007.4883 | s2cid=118629873 | postscript=. }}

{{citation

| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.

| title=A catalogue of multiplicity among bright stellar systems

| journal=Monthly Notices of the Royal Astronomical Society

| volume=389 | issue=2 | pages=869–879 | date=September 2008

| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E

| arxiv=0806.2878 | s2cid=14878976 | postscript=. }}

{{citation

| title=Spatial distribution and kinematics of OB stars

| last1=Gontcharov | first1=G. A.

| journal=Astronomy Letters

| volume=38 | issue=11 | pages=694–706 | date=November 2012

| doi=10.1134/S1063773712110035 | bibcode=2012AstL...38..694G

| arxiv=1606.09028 | s2cid=119108982 | postscript=. }}

{{citation | display-authors=1

| title=Projected Rotational Velocities and Stellar Characterization of 350 B Stars in the Nearby Galactic Disk

| last1=Bragança | first1=G. A. | last2=Daflon | first2=S.

| last3=Cunha | first3=K. | last4=Bensby | first4=T.

| last5=Oey | first5=M. S. | last6=Walth | first6=G.

| journal=The Astronomical Journal | date=November 2012

| doi=10.1088/0004-6256/144/5/130 | bibcode=2012AJ....144..130B |arxiv = 1208.1674 | s2cid=118868235

}}

{{citation | display-authors=1

| last1=Johnson | first1=H. L. | last2=Iriarte | first2=B.

| last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z.

| title=UBVRIJKL photometry of the bright stars

| journal=Communications of the Lunar and Planetary Laboratory

| volume=4 | issue=99 | pages=99 | year=1966

| bibcode=1966CoLPL...4...99J | postscript=. }}

{{cite simbad

| title=lam CMa | accessdate=2017-09-07 | postscript=. }}

}}

External links

{{citation

| title=Theta and Lambda Canis Majoris

| first1=James N. | last1=Kaler | date=March 8, 2013

| work=STARS | publisher=University of Illinois

| url=http://stars.astro.illinois.edu/sow/thetacma.html

| accessdate=2017-09-08 | postscript=. }}

Category:B-type main-sequence stars

Canis Majoris, Lambda

Category:Canis Major

Category:Durchmusterung objects

045813

30788

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